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23 Nov 2019
Two uniform disks are mounted (like merry-go-round) on frictionless bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with mass M and radius R is set spinning clockwise at angular speed of Wo. The second disk, with mass 3M and Radius R/2 is set spinning counterclockwise with the sample angular speed of Wo. They then coupld together. (the rotaional inertia of a disk is mr^2/2). What is their angular speed and direction of rotation after coupling? How much is the energy loss of the two-disk system caused by such coupling?
Two uniform disks are mounted (like merry-go-round) on frictionless bearings on the same axle and can be brought together so that they couple and rotate as one unit. The first disk, with mass M and radius R is set spinning clockwise at angular speed of Wo. The second disk, with mass 3M and Radius R/2 is set spinning counterclockwise with the sample angular speed of Wo. They then coupld together. (the rotaional inertia of a disk is mr^2/2). What is their angular speed and direction of rotation after coupling? How much is the energy loss of the two-disk system caused by such coupling?
Hubert KochLv2
30 Jul 2019
